John Deere has square edge deck plates, CIH has beveled, Agco has a raised rod welded onto their deck plate, I struggle with this raised rod thinking it is another shear point to shell kernels. CIH says theirs hugs the ear to prevent shelling but others say the bevel actually helps feed shelled kernels through the head for header loss. Some say the raised rod helps keep the shelled kernels on the deck plate & fed into the combine but also keeps more trash feeding into the combine? Pick your evil, in the end all heads shell corn if not properly adjusted or run at the proper speed. I thought if I were to rebuild ours I would weld the rod on flush with the top of the deck plate to prevent this extra shear point from shelling kernels. The round stainless rod sounds like a good idea as it is easy to work with.